University:
California State University, Northridge
Course:
MATH 340 | Introduction to Probability and Statistics
Academic year:

2015
Views:

408

Pages:

2
Author:

Heidy Larsen

MATH 340, Quiz 6 �&dta,,tJ� Name: (print) _____________________ Each problem is worth 2 points. Show all your work. 1. The number of times that a person contracts a cold is a Poisson random variable with parameter .X = 5. Suppose a new wonder drug (based on large quantities of vitamin C) has just been marketed that reduces the Poisson parameter to .X = 3 for 75 percent of the population. For the other 25 percent of the population, the drug has no appreciable effect. If an individual tries the drug for a year and has 2 colds in that time, how likely is it that the drug is beneficial for him or her? x- P(x�2 I a)= e P (X-== � /B -) 3 ,__ 2.- ( b 2. ( "2.. e -3 ..:l_ -3 - z e e-> ?::E: e-r z_ ( Please turn over...